Yes!
I decided to stop derailing other threads and officially RELEASE!
http://dl.dropbox.com/u/516743/mass_driver1.0.rar
Extract to garrysmod folder, not addons.
Features: Gibs most NPCs, pierces most props
Dewelds, unfreezes, explodes, and generally causes havoc.
It is messy and it will leave stains.
I do not recommend using it in enclosed spaces.
Well ventilated areas are advised, unless you enjoy breathing in blood.
I do not endorse it's use in multiplayer, and it comes with 0 guarantees.
Silverlan ported the model from these guys:
http://www.moddb.com/mods/opposing-force-redux
Brilliant work by both of them.
The lua and effects are all my own, the sounds are partially mine, partially westwood's and partially property of the Empiresmod dev team.

OLD MODEL